US2287884A - Piston ring - Google Patents
Piston ring Download PDFInfo
- Publication number
- US2287884A US2287884A US343588A US34358840A US2287884A US 2287884 A US2287884 A US 2287884A US 343588 A US343588 A US 343588A US 34358840 A US34358840 A US 34358840A US 2287884 A US2287884 A US 2287884A
- Authority
- US
- United States
- Prior art keywords
- piston ring
- grooves
- ring
- piston
- tin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/20—Rings with special cross-section; Oil-scraping rings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49274—Piston ring or piston packing making
- Y10T29/49281—Piston ring or piston packing making including coating or plating
Definitions
- the object-of the invention is a piston ring having improved resistance to scufflng and wear.
- the piston ring which may be of cast iron or steel, has, in its rubbing surface, ,fine circumferential grooves which are lined or partially filled with tin or any other suitable relatively soft metal.
- the partial filling of-the grooves with tin orthe like may be effected by electro-plating the rubbing surface of the piston ring with the soft metal; to
- the drawing shows one construction according to the invention.
- FIG. 7 of the Fig. 1 is a sectional view of an engine cylinder showing therein a piston to which three packing rings (one shown in section), according to the invention, have been applied.
- Fig. 2 is an enlarged sectional view of one of I the piston rings, showing untinned.
- Fig. 3 is an enlarged sectional view of the same piston ring after its rubbing surface has been tin plated, and the grooves have ,been partially filled with tin.
- Fig. 4 is an enlarged sectional view of the same piston ring after it has been machined to size by the removal of the plating from the rubbing surface of the ring.
- the piston ring is .125" wide, and the four grooves therein are .010" wide and .015" deep. The grooves are separated by .015", while the topmost and lowermost grooves are '.02'0" from the edges of the .
- the grooves in the piston ring might be lined with tin in other ways, as by spraying molten tin therein, or hammering -a strip of tin therein, it has been found that the plating process is amost convenient way of doing this.
- the piston ring has improved life, probably ,for the reason that it has a plurality of edges of anti-friction material formed by the tin and the oil grooves. therein, and that throughout the life of the ring a small quantity of the tin, well lubricated by the oil in thegrooves therein, is wiped over the rubb surface of the ring, which has an adequate area of the harder springy metal to maintain a long lived seal between the piston and the cylinder.
- this may be, it has been found that the ring has greatly improved resistance to scufling and wear, and a very much longer life than any, other type of pistomring, under the very onerous conditions ina Diesel engine.
- a piston ring having a circumferential rub bing surface, an oil groove in said surface, said 011 groove being lined with-an antlfriction material extending to said rubbing surface.
- a piston ring having a plurality of circum-' ferential oil grooves in its rubbing surface, said oil grooves "being lined with tin extending to the rubbing surface of the piston ring.
- a piston ring having a circumferential rubbing surface comprised of annular laminated areas of a hard metal, and a soft metal, .and having an annular oil-groove in one of said areas.
- A. piston ring of hard metal having a-plu- 1 rality of circumferential oil grooves in its rubbing surface, said oil grooves beingllned with a soft anti-friction metal extending out to the rubhing. surface of the piston ring, whereby the rubbingsurface of the piston rings is comprised of a series of annular laminated areas of a hard metal, a soft metal, a space; a soft metal and a hard metal, in succession.
Description
Patented J ne'so, 1942 UNITED. STATES PATENT OFFICE PISTON RING Walter E. J ominy, Detroit, Mich, assignor to General Motors Corporation, Detroit, Mich., a corporation of Delaware Application July 2, 194b, Serial No. 343,588
Claims. (01. 309-44) This invention relates to piston rings; and
' especially to piston rings for maintaining the requisite seal between the piston and cylinder of an internal combustion engine.
The object-of the invention is a piston ring having improved resistance to scufflng and wear.
' The above and other objects of the invention will be apparent as the description proceeds. According to the. invention, the piston ring, which may be of cast iron or steel, has, in its rubbing surface, ,fine circumferential grooves which are lined or partially filled with tin or any other suitable relatively soft metal. The partial filling of-the grooves with tin orthe like may be effected by electro-plating the rubbing surface of the piston ring with the soft metal; to
a thickness suiiicient -toline without filling the grooves, and then removing substantially all the.
plating from over the rubbing surface ring, to size. v 1
The drawing shows one construction according to the invention.
In the drawing:
7 of the Fig. 1 is a sectional view of an engine cylinder showing therein a piston to which three packing rings (one shown in section), according to the invention, have been applied.
Fig. 2 is an enlarged sectional view of one of I the piston rings, showing untinned. v
Fig. 3 is an enlarged sectional view of the same piston ring after its rubbing surface has been tin plated, and the grooves have ,been partially filled with tin.
the grooves therein,
Fig. 4 is an enlarged sectional view of the same piston ring after it has been machined to size by the removal of the plating from the rubbing surface of the ring.
In Fig.1, the. piston rings I, 2' and a, are
In the example illustrated, the piston ring is .125" wide, and the four grooves therein are .010" wide and .015" deep. The grooves are separated by .015", while the topmost and lowermost grooves are '.02'0" from the edges of the .While the grooves in the piston ring might be lined with tin in other ways, as by spraying molten tin therein, or hammering -a strip of tin therein, it has been found that the plating process is amost convenient way of doing this.
'It will be observed from an examination of -Fig. 4, that the tin plating in the grooves extends out to-the rubbing surface of the piston ring which thereby is comprised of a seriesiof annular laminated areas of a hard metal, a softmetal, a space, a soft metal, and a hard metal,
in succession, or expressed otherwise, that there 2 are spaced circumferential bands of soft metal in the cylindrical surface of the ring, with cir-Q cumferential oil grooves in the soft "metal.
' The piston ring has improved life, probably ,for the reason that it has a plurality of edges of anti-friction material formed by the tin and the oil grooves. therein, and that throughout the life of the ring a small quantity of the tin, well lubricated by the oil in thegrooves therein, is wiped over the rubb surface of the ring, which has an adequate area of the harder springy metal to maintain a long lived seal between the piston and the cylinder. However, this may be, it has been found that the ring has greatly improved resistance to scufling and wear, and a very much longer life than any, other type of pistomring, under the very onerous conditions ina Diesel engine.
- In some circumstances a thin layer of tin might,be left over the surface of the rings.
I claim:
1. A piston ring having a circumferential rub bing surface, an oil groove in said surface, said 011 groove being lined with-an antlfriction material extending to said rubbing surface.
2, A piston ring having a plurality of circum-' ferential oil grooves in its rubbing surface, said oil grooves "being lined with tin extending to the rubbing surface of the piston ring.
3, A piston ring having a circumferential rubbing surface, comprised of annular laminated areas of a hard metal, and a soft metal, .and having an annular oil-groove in one of said areas.
4. A. piston ring of hard metal having a-plu- 1 rality of circumferential oil grooves in its rubbing surface, said oil grooves beingllned with a soft anti-friction metal extending out to the rubhing. surface of the piston ring, whereby the rubbingsurface of the piston rings is comprised of a series of annular laminated areas of a hard metal, a soft metal, a space; a soft metal and a hard metal, in succession.
ring. The oftin plating It, as shown '1 in Figs. 3 and 4 is about .004". It wilfbe noted that the cross-sectional dimensions of the lined grooves are acmally very small.
5. The combination according to claim 4, n,
which the ring is about .125" 'widefand there are four grooves therein, each about .010" wide and .015" deep, separated by-about .015".
WALTER 1:. mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US343588A US2287884A (en) | 1940-07-02 | 1940-07-02 | Piston ring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US343588A US2287884A (en) | 1940-07-02 | 1940-07-02 | Piston ring |
Publications (1)
Publication Number | Publication Date |
---|---|
US2287884A true US2287884A (en) | 1942-06-30 |
Family
ID=23346713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US343588A Expired - Lifetime US2287884A (en) | 1940-07-02 | 1940-07-02 | Piston ring |
Country Status (1)
Country | Link |
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US (1) | US2287884A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2609260A (en) * | 1950-02-23 | 1952-09-02 | Ramsey Corp | Piston packing ring |
US2689774A (en) * | 1950-11-15 | 1954-09-21 | Ramsey Corp | Piston ring |
US2966382A (en) * | 1958-05-26 | 1960-12-27 | Ernest R Olsen | Wear-resistant piston |
US4101140A (en) * | 1972-03-23 | 1978-07-18 | Tetrafluor, Inc. | Peripherally grooved seal |
US5067734A (en) * | 1990-06-01 | 1991-11-26 | Abb Vetco Gray Inc. | Metal seal with grooved inlays |
US5433453A (en) * | 1994-03-02 | 1995-07-18 | Imo Industries, Inc. Quabbin Division | Articulated snout rings having spaced teeth |
US5461776A (en) * | 1990-01-09 | 1995-10-31 | Ae Piston Products Limited | Method of manufacturing piston rings |
WO2001018433A1 (en) * | 1999-09-04 | 2001-03-15 | Man B & W Diesel A/S | Piston ring for a reciprocating internal combustion engine |
US20130323528A1 (en) * | 2012-06-01 | 2013-12-05 | Sulzer Metco Ag | Bearing part and thermal spray method |
US20180283552A1 (en) * | 2015-10-05 | 2018-10-04 | Federal-Mogul Burscheid Gmbh | Piston ring |
-
1940
- 1940-07-02 US US343588A patent/US2287884A/en not_active Expired - Lifetime
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2609260A (en) * | 1950-02-23 | 1952-09-02 | Ramsey Corp | Piston packing ring |
US2689774A (en) * | 1950-11-15 | 1954-09-21 | Ramsey Corp | Piston ring |
US2966382A (en) * | 1958-05-26 | 1960-12-27 | Ernest R Olsen | Wear-resistant piston |
US4101140A (en) * | 1972-03-23 | 1978-07-18 | Tetrafluor, Inc. | Peripherally grooved seal |
US5461776A (en) * | 1990-01-09 | 1995-10-31 | Ae Piston Products Limited | Method of manufacturing piston rings |
US5067734A (en) * | 1990-06-01 | 1991-11-26 | Abb Vetco Gray Inc. | Metal seal with grooved inlays |
US5433453A (en) * | 1994-03-02 | 1995-07-18 | Imo Industries, Inc. Quabbin Division | Articulated snout rings having spaced teeth |
WO2001018433A1 (en) * | 1999-09-04 | 2001-03-15 | Man B & W Diesel A/S | Piston ring for a reciprocating internal combustion engine |
US20130323528A1 (en) * | 2012-06-01 | 2013-12-05 | Sulzer Metco Ag | Bearing part and thermal spray method |
CN103453018A (en) * | 2012-06-01 | 2013-12-18 | 苏舍美特科公司 | Warehouse item and thermal spray method |
US9097276B2 (en) * | 2012-06-01 | 2015-08-04 | Oerlikon Metco Ag | Bearing part and thermal spray method |
CN103453018B (en) * | 2012-06-01 | 2017-10-13 | 苏舍美特科公司 | Parts of bearings and heat spraying method |
US9885382B2 (en) | 2012-06-01 | 2018-02-06 | Oerlikon Metco Ag, Wohlen | Zinc-free spray powder, copper-containing thermal spray layer, as well as method of manufacturing a copper-containing thermal spray layer |
US20180283552A1 (en) * | 2015-10-05 | 2018-10-04 | Federal-Mogul Burscheid Gmbh | Piston ring |
US10584793B2 (en) * | 2015-10-05 | 2020-03-10 | Federal-Mogul Burscheid Gmbh | Piston ring |
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